摘要
以单辊快淬法和非晶晶化法制备的（Fe66Co20B14）100-）Cux（x=0.7,1）系列非晶/纳米晶合金带材为研究对象,利用X射线衍射法表征母相合金的晶体结构。利用差示扫描量热法标定其热力学性能以及晶化过程。采用纵向磁场热处理的工艺方法制备纳米晶材料。研究在外加磁场强度恒定的条件下,退火温度对样品软磁性能的影响。采用振动样品磁强计、阻抗分析仪、交直流B-H仪等测定了该合金的软磁性能。结果表明,该合金在淬态条件下具有强的玻璃形成能力、高的热稳定性以及高的饱和磁感应强度。纵向磁场热处理在提高该合金饱和磁感应强度、降低矫顽力方面卓有成效,并且在高频条件下可使该合金的损耗值维持在较低的范围。
Taking the （Fe66Co20B14）100-xCux （x=0.7, 1） amorphous/nanocrystalline alloy ribbons fabricated by melt spinning technique and amorphous crystallization method as research object, the crystal microstructure of the matrix alloy was characterized by X ray diffraction. The thermodynamic properties and crystallization process of the alloys were characterized by differential scanning calorimetry. The longitudinal magnetic field heat treatment was carried out to produce nanocrystalline material. The effects of annealing temperatures on the soft magnetic properties of the sample was studied under the condition of constant magnetic field intensity. The soft magnetic properties of the alloy were determined by vibrating sample magnetometer, impedance analyzer and AC/DC B-H instrument. The results show that the as-quenched alloys have good glass forming ability, high thermal stability and high saturation magnetic induction. The longitudinal magnetic field heat treatment can effectively improve the saturation magnetic induction of the alloy and greatly reduce the coercivity, and make the loss value of the alloy under high frequency keep in low level.
作者
苗宝雯
罗强
沈军
徐辉
李忠
MIAO Baowen;LUO Qiang;SHEN Jun;XU Hui;LI Zhong(College of Materials Science and Engineering, Tongji University, Shanghai 201804, China;College of Materials Science and Engineering, Shanghai University, Shanghai 200072, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第8期153-157,共5页
Hot Working Technology
基金
国家重点研发计划项目(2016YFB0300500)
国家自然科学基金项目(5601130,51371127)
关键词
纳米晶
磁场热处理
软磁性能
饱和磁感应强度
矫顽力
nanocrystalline alloy
magnetic field heat treatment
soft magnetic properties
saturation magnetic induction
coercivity
